Texas Instruments MSP430G2202IRSA16T

Overview

MSP430G2202IRSA16T from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 16-pin QFN package, featuring 2 kB flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and up to 16 capacitive-touch enabled I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430G2202IRSA16T datasheet, MSP430G2202IRSA16T pinout, MSP430G2202IRSA16T application, or MSP430G2202IRSA16T equivalent, key selection criteria include its 2 kB flash size, 256 B RAM capacity, USI-based serial interface support, ultra-low standby current (0.5 µA), and QFN-16 footprint compatibility with space-constrained embedded designs.

Technical Context

The MSP430G2202IRSA16T implements a 16-bit RISC CPU with 62.5-ns instruction cycle time and integrated constant generators for high code efficiency. Its clock system includes a digitally controlled oscillator (DCO) calibrated to 1 MHz, 8 MHz, 12 MHz, and 16 MHz, plus internal LF oscillator and external crystal support (32 kHz).

It uses Spy-Bi-Wire for on-chip emulation and programming, supports five low-power modes (LPM0–LPM4), and features brownout detection, programmable pullup/pulldown resistors on all I/O, and pin-oscillator enable for capacitive-touch sensing - all without ADC10 functionality (excluded in G2x02 series).

Key Specifications

Pinout & Package

Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.

Compared with MSP430G2212IRSA16T and MSP430G2232IRSA16T, the MSP430G2202IRSA16T offers optimized cost and power for USI-centric control applications without comparator or ADC overhead - delivering lowest active current among the three when serial communication dominates the use case.

Availability

MSP430G2202IRSA16T is available at Aetrix Electronics and suitable for smart sensor nodes, wireless remotes, industrial HMI interfaces, and portable data loggers requiring stable component supply and long-term manufacturability.

Supply support for MSP430G2202IRSA16T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in low-power design.

The MSP430G2xx family was engineered for ultra-low-power portable measurement and sensing applications, emphasizing rapid wake-up, minimal active/standby current, and integration of essential peripherals in compact packages.

FAQ

Does MSP430G2202IRSA16T include an analog-to-digital converter (ADC)?

No, the MSP430G2202IRSA16T does not include the ADC10 module. It belongs to the G2x02 series, which omits ADC functionality entirely - unlike the G2x32 series. All ADC-related pins (e.g., A0–A7, VREF+/VREF−, ADC10CLK) are repurposed as general-purpose I/O or timer signals in the MSP430G2202IRSA16T.

What is the maximum operating frequency of MSP430G2202IRSA16T?

The MSP430G2202IRSA16T supports a maximum system clock (MCLK) of 16 MHz, achieved via its factory-calibrated digitally controlled oscillator (DCO). This frequency is fully operational across the 1.8 V–3.6 V supply range and enables sub-microsecond interrupt response times critical for real-time sensor control.

Can MSP430G2202IRSA16T drive capacitive-touch buttons?

Yes, the MSP430G2202IRSA16T supports capacitive-touch sensing on up to 16 I/O pins using its integrated pin-oscillator circuitry. Each pin can be individually enabled for touch detection without external components, making it ideal for low-cost human-interface applications like remote controls and appliance panels.

Is MSP430G2202IRSA16T pin-compatible with other 16-pin MSP430G2xx devices?

Yes, the MSP430G2202IRSA16T shares identical pinout and package (16-pin QFN RSA) with other G2xx devices in the same footprint, including MSP430G2212IRSA16T and MSP430G2232IRSA16T. However, functional differences (e.g., presence of comparator or ADC) mean firmware and peripheral initialization must be validated per device variant.

What debug interface does MSP430G2202IRSA16T support?

The MSP430G2202IRSA16T supports Spy-Bi-Wire (SBW), a two-wire variant of JTAG, using RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 15). This interface enables full in-system programming, debugging, and flash memory access without requiring a 4-pin JTAG header, reducing PCB layout complexity.